Project sector
Renovations & Additions
Alterations and additions are the strongest-growing segment of NSW residential work. Minor work is often exempt development needing no approval; more substantial work can usually proceed as complying development; and where the site or scope rules that out, a development application applies.
Overview
Whether an addition is exempt, complying or merit-assessed depends on the extent of work, the building's existing compliance and the site's constraints. The Codes SEPP sets standards for alterations and additions, and small internal works often fall within the exempt-development provisions.
Additions over the BASIX threshold require a BASIX certificate, and existing non-compliances (setbacks, height, an earlier unapproved structure) frequently surface during assessment. We identify these early so the pathway is clear before lodgement.
Typical pathway
- 01
Scope review
We assess whether the work is exempt, complying development, or requires a DA.
- 02
Approval
A CDC for qualifying additions, or a CC following development consent.
- 03
Construction
Critical-stage inspections for structural and waterproofing work as applicable.
- 04
Completion
Occupation Certificate for the altered building where one is required.
What shapes the assessment
Extent of work
Internal-only, single-storey and two-storey additions are treated differently under the code.
Existing compliance
Pre-existing non-compliances and earlier unapproved works can affect the available pathway.
BASIX threshold
Additions above the cost threshold require a BASIX certificate reflected in the plans.
Heritage
Heritage listing or a conservation area usually removes the complying-development pathway.
Ready to get started?
Renovating or adding to a home?
Send the plans and a note on the existing building. We will confirm whether the work is exempt, complying development, or needs a DA.
We respond to enquiries within one business day.